The preteen suspect is accused in juvenile court of first-degree sexual assault of a pre-school age boy.

According to the court documents, the incident took place at the day care earlier this month before it was shut down by state regulators.

WISN 12 News has learned Cedarburg police believe at least two children at the former Family Tree Learning Center were the victims of what they call sexual contact by an adolescent there.

So far, prosecutors have filed a single juvenile charge of first-degree sexual assault of a child under 13 against the 12-year-old boy.

Those proceedings were held in closed court, and court rules prevent WISN 12 News from identifying the suspect.

However, WISN 12 News reporter Nick Bohr learned the allegations surround an incident alleged to have happened earlier this month at the day care. The preschool boy told his mother the suspect gave him candy, touched him inappropriately and told him to keep it a secret.

Meanwhile, WISN 12 News has learned of allegations of an attempt at inappropriate contact dating back to 2011.

A state of Wisconsin report states, "(The) facility was cited after children were observed not being closely supervised on a field trip, when there was an attempt at inappropriate child-to-child contact in a bathroom. A formal warning letter was issued."

That field trip was to Cedarburg's Cedar Creek Park, with the attempt at inappropriate contact in a bathroom there, according to the report.

Meanwhile, the day care was shut down for good Monday. Employees peeled out of the parking lot without answering questions.

Parents of the children who attended the day care have been told by Cedarburg police that their kids, even if victimized as well, may not be ready to tell them about it, so they've arranged for a forensic psychologist to interview the children with the parents' permission.

Those interviews are set for early next month, and any information gleaned could result in additional charges.

WISN 12 News has also learned that more information stemming from the investigation into the day care could be released as early as Thursday,